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identity access
Pass the Passkey: A Novel Attack Surface in Passwordless Authentication
Passkey implementations with validation gaps can inadvertently reduce multi-factor authentication to single-factor security when relying parties neglect to properly verify the User Verified flag during authentication. This flaw in passkey deployment creates an attack surface that undermines the security benefits of passwordless authentication schemes. Organizations implementing passkeys must ensure proper validation of authentication signals to maintain intended security strength.
Why it matters: Security teams evaluating or deploying passkey-based authentication should review whether their relying parties validate the User Verified flag, as failing to do so degrades MFA effectiveness and exposes users to unauthorized access.
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- First seen by Cybersecurity Tracker
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identity access
Pass the Passkey: A Novel Attack Surface in Passwordless Authentication
Passkey implementations that fail to validate the User Verified flag can reduce multi-factor authentication to single-factor protection, creating a novel attack surface. When relying parties do not properly check this flag, attackers may bypass intended security controls. The research highlights a critical validation gap in passwordless authentication deployments.
Why it matters: Organizations deploying passkeys must verify implementation practices, as misconfiguration can nullify the security benefits of passwordless authentication and leave users exposed to account takeover.
- Source published
- First seen by Cybersecurity Tracker